2021-3-13 xml的增删改查

  public void XmlAdd(string filename, List<People> pList)

        {

            try

            {

                List<People> peoples = XmlDeSerializer(filename);

                foreach (var item in pList)

                {

                    People people = new People();

                    people.Name = string.IsNullOrEmpty(item.Name) ? "" : item.Name;

                    people.Id = string.IsNullOrEmpty(item.Id) ? "" : item.Id;

                    people.Age = string.IsNullOrEmpty(item.Age) ? "" : item.Age;

                    people.Sex = string.IsNullOrEmpty(item.Sex) ? "" : item.Sex;

                    peoples.Add(people);

                }

                XmlSerializer x = new XmlSerializer(typeof(List<People>));

                TextWriter writer = new StreamWriter(filename);

                x.Serialize(writer, peoples);

                writer.Dispose();

            }

            catch (Exception ex)

            {

            }

        }

        /// <summary>

        /// xml编辑

        /// </summary>

        /// <param name="filename"></param>

        /// <param name="people"></param>

        public void XmlEdit(string filename, List<People> pList, int index)

        {

            try

            {

                XmlDelete("User", index);

                List<People> peoples = XmlDeSerializer(filename);

                foreach (var item in pList)

                {

                    People people = new People();

                    people.Name = string.IsNullOrEmpty(item.Name) ? "" : item.Name;

                    people.Id = string.IsNullOrEmpty(item.Id) ? "" : item.Id;

                    people.Age = string.IsNullOrEmpty(item.Age) ? "" : item.Age;

                    people.Sex = string.IsNullOrEmpty(item.Sex) ? "" : item.Sex;

                    peoples.Insert(index, people);

                }

                XmlSerializer x = new XmlSerializer(typeof(List<People>));

                TextWriter writer = new StreamWriter(filename);

                x.Serialize(writer, peoples);

                writer.Dispose();

            }

            catch (Exception ex)

            {

            }

        }

        /// <summary>

        /// 删除列表

        /// </summary>

        /// <param name="filename"></param>

        /// <param name="pList"></param>

        public void XmlDelete(string filename, int index = 0)

        {

            try

            {

                List<People> peoples = XmlDeSerializer(filename);

                peoples.RemoveAt(index);

                XmlSerializer x = new XmlSerializer(typeof(List<People>));

                TextWriter writer = new StreamWriter(filename);

                x.Serialize(writer, peoples);

                writer.Dispose();

            }

            catch (Exception ex)

            {

            }

        }

        /// <summary>

        /// 显示列表

        /// </summary>

        /// <param name="filename"></param>

        /// <param name="pList"></param>

        public List<People> XmlDeSerializer(string filename)

        {

            try

            {

                var mySerializer = new XmlSerializer(typeof(List<People>));

                var myFileStream = new FileStream(filename, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);

                if (myFileStream.Length > 0)

                {

                    var myObject = (List<People>)mySerializer.Deserialize(myFileStream);

                    return myObject;

                }

                myFileStream.Dispose();

                return new List<People>();

            }

            catch (Exception ex)

            {

                return new List<People>();

            }

        }

以上是可以放在xmlHelp直接调用的方法

  public class People

    {

        public string Name;

        public string Sex;

        public string Age;

        public string Id;

        public People() { }

        public People(string Name, string Sex, string Age, string Id)

        {

            this.Name = Name;

            this.Sex = Sex;

            this.Age = Age;

            this.Id = Id;

        }

    }